目的:研究SFRPs家族中SFRP1、SFRP2、SFRP4、SFRP5基因启动子区甲基化状况,探讨基因的甲基化与肾透明细胞癌发生发展的关系。方法:采用甲基化特异性PCR(methylation specific PCR,MSP)方法检测66例肾透明细胞癌及30例癌旁组织中SFRP1、S...目的:研究SFRPs家族中SFRP1、SFRP2、SFRP4、SFRP5基因启动子区甲基化状况,探讨基因的甲基化与肾透明细胞癌发生发展的关系。方法:采用甲基化特异性PCR(methylation specific PCR,MSP)方法检测66例肾透明细胞癌及30例癌旁组织中SFRP1、SFRP2、SFRP4、SFRP5基因启动子区甲基化状态及其与临床病理学资料之间的关系。结果:肾透明细胞癌组织中SFRP1、SFRP2、SFRP4、SFRP5基因甲基化率分别为77.3%(51/66)、72.7%(48/66)、59.1%(39/66)、69.7%(46/66),均显著高于相应的癌旁组织,结果有统计学意义(P<0.05)。与临床病理学资料相联系,肾透明细胞癌组织中SFRP1、SFRP5基因甲基化与肿瘤TNM分期相关;SFRP4基因甲基化与肿瘤的病理学分级相关(P<0.05)。结论:SFRP1、SFRP2、SFRP4、SFRP5基因的甲基化均可能参与肾透明细胞癌的发生。SFRP1、SFRP5基因甲基化可能与肾透明细胞癌的发展,浸润和转移有关。SFRP4基因甲基化可能与肾透明细胞癌的恶性行为有关。展开更多
目的:检测食管鳞癌(esophageal squamous cell cancer,ESCC)和贲门腺癌(gastric cardia adenocarcinoma,GCA)中分泌型卷曲相关蛋白4(secreted frizzled related protein 4,SFRP4)的基因甲基化状态,探讨其与食管鳞癌和贲门腺癌发生的关...目的:检测食管鳞癌(esophageal squamous cell cancer,ESCC)和贲门腺癌(gastric cardia adenocarcinoma,GCA)中分泌型卷曲相关蛋白4(secreted frizzled related protein 4,SFRP4)的基因甲基化状态,探讨其与食管鳞癌和贲门腺癌发生的关系。方法:应用甲基化特异性PCR(methylation-specific PCR,MSP)及RT-PCR的方法检测49例食管鳞癌及58例贲门腺癌中SFRP4基因的甲基化状态及其mRNA表达情况,应用免疫组织化学法检测Wnt通路中心因子β-catenin蛋白的表达情况,并分析其与临床病理参数间的关系。结果:在食管鳞癌及贲门腺癌中,SFRP4基因的甲基化率分别为42.6%(21/49)和72.4%(42/58),均明显高于癌旁非肿瘤组织(P<0.01)。在贲门腺癌中SFRP4基因的高甲基化与肿瘤患者的临床分期相关,与病理分级无关;而在食管鳞癌中,该基因的甲基化与各临床病理指标均无关(P>0.05)。SFRP4基因在食管鳞癌及贲门腺癌中mRNA阳性表达率分别为69.3%(34/49)和44.8%(26/58),均明显低于癌旁非肿瘤组织(P<0.05),且肿瘤组织中mRNA表达与该基因的甲基化状态明显相关(P<0.01)。通路中心因子β-catenin蛋白在食管鳞癌及贲门腺癌中的异质表达率分别为65.3%(32/49)和86.2%(50/58),均明显高于癌旁非肿瘤组织(P<0.01),且其异质表达与SFRP4基因的甲基化状态相关(P<0.05)。结论:SFRP4基因的高甲基化状态可能是引起贲门癌及食管癌发生的共同分子机制之一,并有可能通过Wnt/β-catenin信号转导通路发挥作用。检测SFRP4基因甲基化状态对于贲门腺癌的预后评估有一定参考价值。展开更多
目的:探究环氧化酶-2(cyclooxygenase-2,COX-2)、分泌型卷曲相关蛋白4(secreted frizzled-related protein 4,SFRP4)和WW域结合蛋白2(WW-domain binding protein 2,WBP2)在子宫腺肌病中的表达及其与子宫腺肌病临床特征的关系。方法:选取...目的:探究环氧化酶-2(cyclooxygenase-2,COX-2)、分泌型卷曲相关蛋白4(secreted frizzled-related protein 4,SFRP4)和WW域结合蛋白2(WW-domain binding protein 2,WBP2)在子宫腺肌病中的表达及其与子宫腺肌病临床特征的关系。方法:选取2019年1月-2020年6月在郑州大学第三附属医院确诊子宫腺肌病并进行手术切除子宫的患者40例,收集40例患者的异位内膜标本,统计患者的痛经、月经量及子宫大小等临床资料。采用免疫组化SP法分别检测COX-2、SFRP4和WBP2在子宫腺肌病异位病灶中的表达,分析其相互关系及其与子宫腺肌病临床特征的关系。结果:COX-2和SFRP4的表达呈正相关(r_(s)=0.533,P<0.01),COX-2和WBP2的表达呈正相关(r_(s)=0.544,P<0.01),WBP2和SFRP4的表达呈正相关(r_(s)=0.574,P<0.01)。无或轻度痛经及中度痛经组与重度痛经组COX-2和SFRP4低表达与高表达分布情况比较,差异均有统计学意义(P<0.05),而两组WBP2低表达与高表达分布情况比较,差异无统计学意义(P>0.05)。子宫体积正常组与子宫体积增大组COX-2、SFRP4及WBP2低表达与高表达分布情况比较,差异均无统计学意义(P>0.05)。月经量正常组与月经量增大组COX-2、SFRP4及WBP2低表达与高表达分布情况比较,差异均无统计学意义(P>0.05)。结论:COX-2、SFRP4和WBP2可能参与了子宫腺肌病的发生发展,COX-2可作为治疗子宫腺肌病潜在的分子靶点。展开更多
Mutations in SFRP4 cause Pyle’s bone disease with wide metaphyses and increased skeletal fragility.The WNT signaling pathway plays important roles in determining skeletal architecture and SFRP4 is a secreted Frizzled...Mutations in SFRP4 cause Pyle’s bone disease with wide metaphyses and increased skeletal fragility.The WNT signaling pathway plays important roles in determining skeletal architecture and SFRP4 is a secreted Frizzled decoy receptor that inhibits WNT signaling.Seven cohorts of male and female Sfrp4 gene knockout mice,examined through 2 years of age,had a normal lifespan but showed cortical and trabecular bone phenotypes.Mimicking human Erlenmeyer flask deformities,bone cross-sectional areas were elevated 2-fold in the distal femur and proximal tibia but only 30%in femur and tibia shafts.Reduced cortical bone thickness was observed in the vertebral body,midshaft femur and distal tibia.Elevated trabecular bone mass and numbers were observed in the vertebral body,distal femur metaphysis and proximal tibia metaphysis.Midshaft femurs retained extensive trabecular bone through 2 years of age.Vertebral bodies had increased compressive strength,but femur shafts had reduced bending strength.Trabecular,but not cortical,bone parameters in heterozygous Sfrp4mice were modestly affected.Ovariectomy resulted in similar declines in both cortical and trabecular bone mass in wild-type and Sfrp4 KO mice.SFRP4 is critical for metaphyseal bone modeling involved in determining bone width.Sfrp4 KO mice show similar skeletal architecture and bone fragility deficits observed in patients with Pyle’s disease with SFRP4 mutations.展开更多
文摘目的:研究SFRPs家族中SFRP1、SFRP2、SFRP4、SFRP5基因启动子区甲基化状况,探讨基因的甲基化与肾透明细胞癌发生发展的关系。方法:采用甲基化特异性PCR(methylation specific PCR,MSP)方法检测66例肾透明细胞癌及30例癌旁组织中SFRP1、SFRP2、SFRP4、SFRP5基因启动子区甲基化状态及其与临床病理学资料之间的关系。结果:肾透明细胞癌组织中SFRP1、SFRP2、SFRP4、SFRP5基因甲基化率分别为77.3%(51/66)、72.7%(48/66)、59.1%(39/66)、69.7%(46/66),均显著高于相应的癌旁组织,结果有统计学意义(P<0.05)。与临床病理学资料相联系,肾透明细胞癌组织中SFRP1、SFRP5基因甲基化与肿瘤TNM分期相关;SFRP4基因甲基化与肿瘤的病理学分级相关(P<0.05)。结论:SFRP1、SFRP2、SFRP4、SFRP5基因的甲基化均可能参与肾透明细胞癌的发生。SFRP1、SFRP5基因甲基化可能与肾透明细胞癌的发展,浸润和转移有关。SFRP4基因甲基化可能与肾透明细胞癌的恶性行为有关。
文摘目的:探究环氧化酶-2(cyclooxygenase-2,COX-2)、分泌型卷曲相关蛋白4(secreted frizzled-related protein 4,SFRP4)和WW域结合蛋白2(WW-domain binding protein 2,WBP2)在子宫腺肌病中的表达及其与子宫腺肌病临床特征的关系。方法:选取2019年1月-2020年6月在郑州大学第三附属医院确诊子宫腺肌病并进行手术切除子宫的患者40例,收集40例患者的异位内膜标本,统计患者的痛经、月经量及子宫大小等临床资料。采用免疫组化SP法分别检测COX-2、SFRP4和WBP2在子宫腺肌病异位病灶中的表达,分析其相互关系及其与子宫腺肌病临床特征的关系。结果:COX-2和SFRP4的表达呈正相关(r_(s)=0.533,P<0.01),COX-2和WBP2的表达呈正相关(r_(s)=0.544,P<0.01),WBP2和SFRP4的表达呈正相关(r_(s)=0.574,P<0.01)。无或轻度痛经及中度痛经组与重度痛经组COX-2和SFRP4低表达与高表达分布情况比较,差异均有统计学意义(P<0.05),而两组WBP2低表达与高表达分布情况比较,差异无统计学意义(P>0.05)。子宫体积正常组与子宫体积增大组COX-2、SFRP4及WBP2低表达与高表达分布情况比较,差异均无统计学意义(P>0.05)。月经量正常组与月经量增大组COX-2、SFRP4及WBP2低表达与高表达分布情况比较,差异均无统计学意义(P>0.05)。结论:COX-2、SFRP4和WBP2可能参与了子宫腺肌病的发生发展,COX-2可作为治疗子宫腺肌病潜在的分子靶点。
文摘Mutations in SFRP4 cause Pyle’s bone disease with wide metaphyses and increased skeletal fragility.The WNT signaling pathway plays important roles in determining skeletal architecture and SFRP4 is a secreted Frizzled decoy receptor that inhibits WNT signaling.Seven cohorts of male and female Sfrp4 gene knockout mice,examined through 2 years of age,had a normal lifespan but showed cortical and trabecular bone phenotypes.Mimicking human Erlenmeyer flask deformities,bone cross-sectional areas were elevated 2-fold in the distal femur and proximal tibia but only 30%in femur and tibia shafts.Reduced cortical bone thickness was observed in the vertebral body,midshaft femur and distal tibia.Elevated trabecular bone mass and numbers were observed in the vertebral body,distal femur metaphysis and proximal tibia metaphysis.Midshaft femurs retained extensive trabecular bone through 2 years of age.Vertebral bodies had increased compressive strength,but femur shafts had reduced bending strength.Trabecular,but not cortical,bone parameters in heterozygous Sfrp4mice were modestly affected.Ovariectomy resulted in similar declines in both cortical and trabecular bone mass in wild-type and Sfrp4 KO mice.SFRP4 is critical for metaphyseal bone modeling involved in determining bone width.Sfrp4 KO mice show similar skeletal architecture and bone fragility deficits observed in patients with Pyle’s disease with SFRP4 mutations.
